George w



Nrrnn STATES Enron.

PATENT ABSORBER FOR AMMONIA-REFRIGERATORS.

SPECIFICATION forming part of Letters Patent No. 275,869, dated April 17', 1883.

Application filed November 22, 1882.

To all whom it may concern Be it known that I, GEORGE W. S'rooKMAN, of Indianapolis, Indiana, have invented a new and useful Improvement in Absorbers for Ammonia-Refrigerators, of' which the following is a description, reference being made to the accompanying drawings, in the several figures of which like letters indicatelike parts.

My invention is designed to supply an absorber for alnmoniarefrigerating apparatus which, by its peculiar construction, shall bring thc weak liquor in contact with a large extent of surface cooled bythe vapor from the refrigerator, and thus prevent heat, and to allow the weak liquor and vapor to unite after the liquor has been cooled and at or near the place of outlet, where it is taken up by the suction of the pump.

1n the drawings, Figure 1 is a vertical section of my absorber; and Fig. 2 is a cross-section of the shell and a top view on the linewm,Fig.1.

In detail, c is the shell of the absorber,which must be of material strong enough to resist considerable pressure, in either end of which are' riveted heads h h.

Vis the pipe which conducts the ammonia vapor from the refrigerating-coil after it has done its work into the absorber.

ff are ilue-sheets,in which are welded tubes t t t, (shown more fully in Fig. 2,) similar to those in a tubular boiler. 0 is the opening or chamber between theupperhead and tluesheet.

A short distance below the upper nue-sheet, f, is a percolator-plate, @also secured to the sides of the absorber-shell, having openings of greater diameter than the tubes, through which openings the tubes p'ass.

W is a pipe through which the weak liquor is received into the absorber. It falls upon the percolatorplate p, and escapes through the openings around the tubes, and, trickling, falls downward, following the tubes, until it reaches the bottomflue-sheet, f',where it stops and accumulates until it is mixed with the gas and is carried away by the pump through the outlet-pipe P. Thus the weak liquor is contained in the chamber between the two fluesheets and around the tubes.

gis a glass gage for showing the height of the water or weak liquor. The vapor or gas (No model.)

comes from the refrigerating-coil through the pipe V, and is allowed to break its force and be distributed from the shield S, and then passes down through the tubes t t t into the opening o', between 'the due-sheetf' and bottom head, h', and from this chamber it escapes through the bend and check-valve C o, which is kept open so long as there is pressure, and closes when the machine is not in operation, and the gas thus mingles with the weak liquor, which, cooled in its passage down the tubes, absorbs the gas readily, and theliquor becomes strong and rich, and it is now drawn out the pipe P by the suction of the pump and thrown again into the retort, to be again vaporized,as sho wn in my Letters Patent No. 245,325, dated August 9, 1881, and No. 264,113, dated September 12, 1882. The union of the vapor y and weak liquid is secured at a point close to the suction-pipe ofthe pump, so thatit is drawn o and away from the absorber' immediately, and the heating of the absorber is prevented and the heat carried away into the retort with the liquid.

What I claim, and desire to secure by Letters Patent, is

1. An absorber for a mmonia-rel'rigeratorsin which upper and lower gas chambers are formed in the interior between the ends ofthe absorber and flue-sheets, in which tubes are welded for conducting the gas from the upper to the lower gas-chamber, and provided with a percolator placed below the upper tine-sheet, having openings to permit the passage of water downward and around the tubes, with a connection between the lower gas-chamber and the space above the lower Hue-sheet for the admission ot' the vapor, so that it will unite with the weak liquor, with an inlet for receiving the weak liquor into the space between the upper due-sheet and the percolator-plate, and an outlet for discharging the enriched liquor in close proximity to a pump, substantially as described.

2. An absorber for ammonia-refrigerators wherein the weak liquor is cooled by contact with the outer surfaces of a series of tubes, through which the cold gas from the refrigerating coil or chamberis conducted,with means for uniting the weak liquor and gas after its IOO passage through these tubes in close proxin1- ity to the suction-pipe of a pump, substantially as described.

3. An absorber for ammonia-refrigerators having upper and lower gas-chambers, o o', upper and lower line-sheets, f f', withl tubes welded therein t tt t, a. distributing-shield, S, under the receiving vapor-pipe V, a percolatorplate, p, below the upper Hue-sheet, a weakro liquor inlet-pipe, W, a cl1eck-valve connection,

C fv, between the lower gas-chamber, o', and the weak-liquor chamber, and an ou tlet-pi pe in close proximity to a pump, substantially as described. Y

Witness my hand this 18th day of-Novembei', 1882.

GEO. W. STOCKMAN. Witnesses:

C. B. J AooBs, C. S. SPRITZ. 

